Lock.



H. DUNAWAY.

LOCK.

APPLICATION FILED OCT. 28, 1914.

mepcssu Patented July 13, 1915.

mwwtoz mail-2 HARRISON DUNAWAY, OF TRINITY, TEXAS.

LooK.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed October 28, 1914. Serial No. 869,057.

To all whom it may concern:

Be it known that I, HARRISON DUNAWAY, a citizen of the United States, residing at Trinity, in the county of Trinity and State of Texas, have invented certain new and useful Improvements in Locksfof which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved lock and has for its primary object to provide a device of this character which is exceedingly simple in its construction, may be easily and quickly operated, and when in its locking condition, cannot beunlocked without the proper key.

The invention has for a-further object to provide an improved mounting and arrange ment of the locking tumblers whereby the same are properly held against displacement within the body of the look so that they will properly engage with the locking bolt.

With the above and other objects in view, my invention consists in the novel features of construction, combination, and arrangement of partsto be hereinafter more fully described, claimed, and illustrated in the accompanying drawing, in which,

Figure l is an elevation of my improved lock with the face plate removed, showing the bolt in its locking position; Fig. 2 is a similar view showing the key inserted and the keepers lifted from engagement with the bolt whereby the latter may be retracted; Fig. 3 is a section taken on the line 33 of Fig. 2, the face plate being secured upon the lock body, and Fig. 4 is a detail perspective view of the tumblers.

Referring in detail to the drawing, 5 designates the body of the lock which may be of any desired form and is constructed of metal of the requisite thickness. This body 5 is provided in one face with parallel horizontal slots or channels indicated at 6 which open at their ends upon opposite edges of the body. Additional vertical channels 7 are also formed in the face of the body 5, said channels at one of their ends communicating with the lower horizontal channels 6 while at their outer ends, the channels 7 intersect the upper horizontal channels 6 and extend for some distance above the same. The central portion 8 of the lock body between the vertical channels 7 is provided with a recess 9 for a purpose which will be later explained.

7 l0 designates a locking bolt which is of a length exceeding the width of the lock body. TlllS locking bolt is provided in one of its longitudinal edges with spaced notches or seats 11. Tumblers 12 are arranged in the vertical slots 7, said tumblers being integrally connected intermediate of their ends by a cross bar 13 which is disposed for movement in the recess 9 of the body 5, said cross bar 13 also serving, by contact with the opposite ends of the recess 9, to limit the extent of movement of the tumblers 12. At their upper ends, these tumbler members are provided with recesses 14 which are approX- imately equal in width to the width of the upper horizontal channels 6.

15 designates a keeper of any suitable type which is adapted to be secured to the jamb of a door for engagement by one end of the locking bolt 10. The key 16 consists of a rectangular bar or shank 17, one end of which is enlarged as at 18, and suitably formed to provide a convenient finger piece. Upon the shank l7, spaced lugs or bits 19 are formed.

The locking bolt and tumblers are retained in position within the body 5 by means of a suitable cover plate 20 which is secured by screws or analogous means upon the face of said body over the several slots or channels therein. This cover plate is provided with a central vertical slot 21 and a short horizontal slot 22 below said vertical slot. The key 16 is provided upon its shank with a finger lug 23 which projects outwardly through the slots 21 in the cover plate and the locking bolt 10 has a similar finger lug 24- thereon which extends out wardly through the horizontal slot 22 of the cover plate. It will be obvious that when the cover plate is provided with the slots for the accommodation of finger pieces whereby the bolt and key may be actuated, the device can only be employed upon the inner side of a door so that the same may be locked by the occupant of a room.

The invention is, therefore, primarily designed to be employed more in the nature of a latch upon doors which are constantly being opened and closed. However, it will be apparent that by resorting to obvious mechanical. alterations in the construction and arrangement of the several parts, the device might also be adapted for use upon the outside of a door.

In operation, the bolt 10 is securely held in its locking position by the tumblers 12, said tumblers falling by gravity so that their lower ends will fit into the seats or notches 11 of the bolt. When it is desiredto lift the tumblers so that the bolt may be retracted, the operator moves the finger piece 23 upwardly so as to raise the key 16, the bits19 which are disposed in the recesses 14 in the upper ends ofsaid bits lifting "the bits upwardly in the slots 7 so as to disengage the lower ends of the bits from the notches in the locking bolt. In this movement of the bits, it will be understood that the cross bar 13 will move freely inthe recess 9 of the lock body 5.

From the foregoing description, taken in connection with the accompanying draw-1 ing, the construction, manner of operation,

and several advantages of my invention will be clearly and fully "understood.

' Vfhile the device is exceedingly simple in its construction, it is, nevertheless, also highlyconvenient and serviceable n practical use and provides means whereby the latch or locking bolt may "be quickly and securely fastened or locked against movement or readily released whenitjis desired to open the door. I 7

It is, of course, obvious thatsuch'fa lock might be employed for numerous purposes, and I do not, therefore, desire to, be restricted to the useof the same as a door lock. The invention is ELlSOrSUSCGPtlblG of various modifications and I, therefore, reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

;Having thus fully described my invention, what I desire to claim and secure by Letters Patent is In a look, a body having intersecting sets of parallel channels in one face, and a recess intermediate said channels and in communication with a 'first set of the parallel channels; tumblers mounted for movement in the second setof parallel'channels, a bar connecting said tumblers and disposed through the recess, the contact of the bar with the opposite Wallsofthe recess serving to limit the movements of the tumblers, a locking bolt movably mounted in one of the first named channels and provided with notches to receive one end of the respective tumblers, and a key arranged in the second of the first named channels for shifting movement therein, said hey being provided with means cooperating with the tumblers to move the same in the channels outo'f enga gement with the locking bolt whereby said bolt may be retracted.

In testimony whereof I hereunto ailix my signature in the presence of two witnesses.

HARRISON DUNAIVAY. Witnesses:

A. PARKE W. L. ANDERSON.

Copies of this pa-tent may be obtained "for five cents each, by addressing the "=Gommiss'io'n'er of Patents.

iwashing ton -llc. 

